BytePlus Seed 1.8, a strong Chinese-optimized LLM. Excellent Chinese generation, long-context handling, and cultural context awareness. Use it for mainland-oriented content, Chinese customer service, and translations that need natural-sounding local phrasing. Maximum context window (input and output combined): about 262,144 tokens. Maximum total input per request (including history): 229,376 tokens. Maximum output per reply: about 8,192 tokens (model reasoning, if any, counts toward this limit). Maximum total upload size per request: 256MB (all files and message content combined). Accepted document formats: pdf, docx, xlsx, pptx, txt, csv (file content is provided to the model as extracted text). Accepted image formats: bmp, gif, heic, heif, jpeg, jpg, png, tif, tiff, webp. Maximum size per image: 10MB. Maximum total image size per message: 48MB (text and history share the same request size limit; uploads close to the limit may still be rejected). Image dimensions: at least 15 pixels per side. Maximum image resolution: 36,000,000 pixels in total. Image aspect ratio: 1/150 to 150. Output content formats: Text This module supports continuous conversations. AI can make mistakes. Please verify important information.